1 files changed, 85 insertions, 1 deletions
diff --git a/refresh.js b/refresh.js
index b2c7362..212a4cb 100644
--- a/refresh.js
+++ b/refresh.js
@@ -1,3 +1,87 @@
-module.exports = async () => {
+const dns = require("dns");
+const superagent = require("superagent");
+
+function resolveDNSAsync(domain) {
+    return new Promise((res, rej) => {
+        if (!/([\--z]+\.)?([\--z]+)\.([A-z]+)/g.test(domain)) return rej("Not a valid domain");
+
+        const options = {
+            family: 4,
+            hints: dns.ADDRCONFIG | dns.V4MAPPED
+        };
+        dns.lookup(domain, options, (err, address, family) => {
+            if (err) return rej(err);
+            res(address);
+        });
+    });
+}
+
+function roundToTwo(num) {
+    return +(Math.round(num + "e+2")  + "e-2");
+}
+
+module.exports = () => {
     // Code entered here will be run every 5 minutes
+    return new Promise(async (res, rej) => {
+        let servers = {
+            canterlot: [await resolveDNSAsync("canterlot.equestria.dev"), 52937],
+            ponyville: [await resolveDNSAsync("ponyville-ipv4.equestria.dev"), 52937],
+            bridlewood: [await resolveDNSAsync("bridlewood.equestria.dev"), 52937],
+            zephyrheights: [await resolveDNSAsync("zephyrheights-ipv4.equestria.dev"), 52938],
+            maretimebay: [await resolveDNSAsync("maretimebay-ipv4.equestria.dev"), 52937]
+        }
+
+        let stats = {}
+
+        for (let key in Object.keys(servers)) {
+            key = Object.keys(servers)[key];
+            let status = {
+                online: null,
+                cpu: null,
+                memory: null,
+                os: null,
+                uptime: null
+            }
+
+            superagent.get(`http://${servers[key][0]}:${servers[key][1]}/json`)
+                .timeout({
+                    response: 5000,
+                })
+                .then(data => data = data.body)
+                .then(data => {
+                    status.online = true;
+                    status.cpu = data.cpu;
+                    status.cpu.load = Math.floor(data.cpu.load * 100);
+                    status.memory = data.memory;
+                    status.memory.swap.used = roundToTwo(data.memory.swap.used / 1073741824);
+                    status.memory.swap.free = roundToTwo(data.memory.swap.free / 1073741824);
+                    status.memory.swap.total = roundToTwo(data.memory.swap.total / 1073741824);
+                    status.memory.physical.used = roundToTwo(data.memory.physical.used / 1073741824);
+                    status.memory.physical.free = roundToTwo(data.memory.physical.free / 1073741824);
+                    status.memory.physical.total = roundToTwo(data.memory.physical.total / 1073741824);
+                    status.os = data.os;
+                    status.uptime = data.uptime;
+                })
+                .catch(reason => {
+                    if (reason.timeout) {
+                        // We timed out.
+                        status.online = false;
+                    } else {
+                        if(reason.code == "ECONNREFUSED") {
+                            status.online = false;
+                            console.warn(`Server ${key} refused our connection. `)
+                        } else {
+                            console.error(reason);
+                        }
+                    }
+                })
+                .finally(() => {
+                    stats[key] = status;
+
+                    if(Object.keys(stats).length == Object.keys(servers).length) {
+                        res(stats);
+                    }
+                });
+        }
+    });
 }